ASTROSAT CZTI

Data Quality Report

Orbit 12365

Creation date: 2024-06-27T16:26:11.027167
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A04_212T01_9000001834_12365cztM0_level2.evt modeM0/AS1A04_212T01_9000001834_12365cztM0_level2_quad_clean.evt
Size (bytes)256,314,24063,011,520
Size244.4 MB 60.1 MB
Events in quadrant A2,102,580420,995
Events in quadrant B1,974,324429,428
Events in quadrant C1,582,806416,646
Events in quadrant D1,867,320397,031

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A085732
B081021
C071261
D079691

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3438812.356021%
B3438782.268761%
C3438431.250727%
D34381012.937755%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 3689 3439 0 0 0.00% 0.00%
B 3689 3439 22 22 0.60% 0.64%
C 3688 3438 0 0 0.00% 0.00%
D 3688 3438 41 41 1.11% 1.19%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 13 251 145174 1660.55 414 404 87.2
A 1 162 130054 1487.12 414 404 87.2
A 1 178 70162 800.14 414 404 87.2
B 4 239 259346 3248.68 412 402 79.7
B 10 245 35894 445.28 412 402 79.7
B 0 219 23586 290.86 412 402 79.7
C 15 208 37565 403.38 393 394 92.1
C 8 128 3473 33.41 393 394 92.1
C 0 207 3134 29.73 393 394 92.1
D 1 52 193696 2021.63 392 380 95.6
D 13 249 46561 482.94 392 380 95.6
D 10 199 34647 358.35 392 380 95.6

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter